865 



teau Gaillard on tlie other, give probably the richest harvest on the 

 river from Paris to the sea. A person who is not nice in his demands 

 for accommodation, may be well entertained at the Chaine d'Or, at 

 the little Andelys. The larger would probably afford a larger inn. 

 From Andelys the botanist may again descend the Seine to the sta- 

 tion which commmiicates with Louviers. He would then have to 

 pass twice on the rail-road the distance from that station to Vernon, 

 but this would cost less time than to ascend the stream between the 

 two places. If after this he is inclined to stop at Mantes, he will find 

 the best Botany on the hills on the north side of the river. 



Joseph Woods. 



November, 1843. 



Art. CXC VI.— Varieties. 



433. Observations on Hieracium nigrescens and H. hypochoeroides. 

 In the last number (Phytol. 801), Mr. H. Watson has called atten- 

 tion to the plant which has been lately considered by English bota- 

 nists as the Hieracium nigrescens ( JVilld.), and for my knowledge of 

 which as a native of Scotland I am indebted to his kindness. A spe- 

 cimen now before me (gathered by Mr. Watson on Ben Aulder) agrees 

 exactly with Bohemian specimens of H. nigrescens received from Mr. 

 Tausch under that name; and as specimens from that botanist are ex- 

 pressly referred to as representing the plant of Willdenow's herbarium 

 by Mr. Froelich (DeCand. Prod. vii. 209), the latest general writer on 

 the subject, I feel myself at liberty to consider that the Bohemian spe- 

 cimens are authentic representations of the plant of Willdenow. In 

 addition to this the Scottish plant agrees well with the descriptions of 

 H. nigrescens given by different authors, some of whom consider it as a 

 distinct species, and others refer it, as an extreme form, to H. alpinum. 

 Having now shown, I trust, sufficient reason for its name, I proceed 

 to make a few observations upon its claims to specific distinction. 

 This is a subject upon which much difference of opinion exists, since 

 some forms of H. alpinum (H. Halleri) approach very closely to it ; 

 and it is only by long-continued cultivation, from seed, of this and H. 

 Halleri, that we can expect to arrive at a determinate opinion upon 

 the subject. I am unable to add anything to the character pointed out 

 by Mr. Watson, as distinguishing this plant from all the forms of H. 

 alpinum, namely, the much broader and more strongly toothed leaves 

 and the dark or nearly black involucre. The difference of the colour 



4d 



